Charles Perkins

Bio: Charles Perkins is an academic researcher. The author has contributed to research in topics: Ad hoc wireless distribution service & Vehicular ad hoc network. The author has an hindex of 1, co-authored 1 publications receiving 42 citations.

AMRoute: ad hoc multicast routing protocol

Abstract: The Ad hoc Multicast Routing protocol (AMRoute) presents a novel approach for robust IP Multicast in mobile ad hoc networks by exploiting user-multicast trees and dynamic logical cores. It creates a bidirectional, shared tree for data distribution using only group senders and receivers as tree nodes. Unicast tunnels are used as tree links to connect neighbors on the user-multicast tree. Thus, AMRoute does not need to be supported by network nodes that are not interested/capable of multicast, and group state cost is incurred only by group senders and receivers. Also, the use of tunnels as tree links implies that tree structure does not need to change even in case of a dynamic network topology, which reduces the signaling traffic and packet loss. Thus AMRoute does not need to track network dynamics; the underlying unicast protocol is solely responsible for this function. AMRoute does not require a specific unicast routing protocol; therefore, it can operate seamlessly over separate domains with different unicast protocols. Certain tree nodes are designated by AMRoute as logical cores, and are responsible for initiating and managing the signaling component of AMRoute, such as detection of group members and tree setup. Logical cores differ significantly from those in CBT and PIM-SM, since they are not a central point for data distribution and can migrate dynamically among member nodes. Simulation results (using ns-2) demonstrate that AMRoute signaling traffic remains at relatively low level for typical group sizes. The results also indicate that group members receive a high proportion of data multicast by senders, even in the case of a highly dynamic network.

Mobile ad hoc networking and the IETF

Abstract: This article is part of a continuing series to discuss ongoing activities within the mobile ad hoc networking (MANET) working group (WG) of the IETF. This article provides a brief overview of recent events.

Class switched networks for tracking articles

Abstract: A method of forming an ad hoc hierarchical communication network involves associating a plurality of wireless transceivers with articles, and assigning to each of the transceivers a class designation representative of a characteristic or behavior of the article with which the transceiver is associated. A network organization routine of the wireless transceivers operates to establish the hierarchical network based on the transceivers' class designations, resulting in a logical network organization that provides efficiencies for asset tracking. Each wireless transceiver's class designation is used by a digital processor of the wireless transceiver to selectively receive packets intended for receipt by transceivers of the same class. The class-based network reduces power consumption and signal interference, which increases battery life in the wireless transceivers. The wireless transceivers may include a query handling routine in communication with a memory of the transceiver for serving as a dynamic distributed hierarchical database system.

Routing protocols in wireless ad-hoc networks : a simulation study

Abstract: An ad-hoc network is a temporary network without any form of centralized administration Multiple hops might be necessary to reach other nodes in the network For this reason, each node acts bo

A survey on quality‐of‐service support for mobile ad hoc networks

Abstract: The general field of mobile ad hoc networking is still in its infancy. Particularly, the challenge of providing Quality-of-Service (QoS) support for ad hoc networks is an open problem and remains relatively uncharted territory. Providing a complete QoS solution for the ad hoc networking environment requires the interaction and cooperation of several components. These components include: (1) a QoS routing protocol, (2) a resource reservation scheme and (3) a QoS capable medium access control (MAC) layer. In this paper, we present a survey of the current research that has addressed each of these components in the context of ad hoc networks. This work is intended to provide a broad and comprehensive view of the various components and protocols required to provide QoS support in computer networks, focusing primarily on ad hoc networks. First, we introduce the unique characteristics of mobile ad hoc networks, which distinguishing this new network architecture from traditional infrastructured wired and wireless networks (i.e. cellular-based networks). We also discuss the impact of these characteristics on QoS provisioning. Next, we describe the first QoS model proposed for mobile ad hoc networks and its relationship to QoS models proposed for the Internet. We then present a review of the proposed algorithms for each QoS component (e.g. QoS routing, resource reservation and the MAC layer). Copyright © 2002 John Wiley & Sons, Ltd.